I see a lot of negatives
I see a lot of negatives, but they're wrong. I did see one that stated, "You have to treat their bedding first" people. Correct, the collar can not do all people. I bought a spray, liquid spray from Rural King called "Repel-X," made by a company named Farnam. 12. U.S. dollars, then the collar. Also, double collar when you remove it from the can; give it a snap before you place it on your pet.